BOX HELP NEEDED

[stretchnutzthejuggalo]

SO, my old system got jacked. 2 audiobahn aw1206t's on a rockford pd.1000.1 amp. SO, its time to upgrade. getting 4 Audiobahn 15's and possibly a DD amp around 5k watts. the PROBLEM is this and simply this.. i drive a hyundai TIBURON!! lol. if any of you have been in one, space is an issue when trying to make a baddass build lol. i know ill need 14-16 cubic ft of bax space for 4 15's. Im thinkin on a wall with a pyramid shaped port in the middle. box starting behind front seats of course lol. BUT, does anyone have any other ideas to put into consideration? being in a really bad neighborhood with ALOT of thefts, im kinda worried about putting 4 15's in easy sight through any of the front windows lol. any help would be appreciated.